package com.evan.design.principle.dependenceinversion.refactor;

/**
 * @author :liujiapeng01
 * @date :2019-03-20 19:46
 **/
public class Evan {

    private ICourse course;

    public void setCourse(ICourse course) {
        this.course = course;
    }

    public void studyCourse() {
        course.studyCourse();
    }

}
